Improvement in shutter-worker



segment-gears employed;

iuiid CHARLES W. SHATTUCK, OP" FITCHBURG, MASSACHUSETTS.

Laim Patent No. 66,946, dated February 16,1869.

ImROVEMENT IN SHUTTER-WORKER.

The Schedule referred to :in these Letters Patentand making part o! me same.

Know all men lig/these presents:

That I, CHARLES W. SHATTUGK, of Fitchburg, in the county of Worcester, and Commonwealth ofMassachusetts, have invented certain new and useful Improvements in Devices for Opening, Closing, and Fastening, or Locking Blinds ;n and I do hereby declare'thatthe following is a full, clear, and exact description' ot' the same`, reference being had to the accompanying v drawings, forming a part of this specification, in which- Figure 1 represents a front View of a window, the blind to which has my improvements applied thereto, one half of the blind being shown open, and the other halt` closed;

Figure 2 represents a top or plan view of one ofthe Figure 3 represents an inside view of a section of the window-frame or jamb; and v Figure 4 represents a section ou line A B, iig. 3.

To enable those skilled in the art to which my iny vention belongs, to make'and use the same, I will pro- Aceed to describe it more in. detail.

In the drawings, the blind-sections A A are shown hinged, at their upper ends, to the building B, in the ordinary manner, while, lat the bottom, they are provided with segment bevel-gears, C C, each gear having va screw, which is screwed into the edge, b, of the blind.

rl.he gears C U have holes, d, through them, whereby they can be secured to the supporting-arms D D, by means of screws e. y The arms D, in this instance, are made with tapering ends, f, which are driven into the sides of the building, as indicated in iig. 4. I 1

They may be made with a screw-thread on the tapering end, to screw in the sides of thebuilding; or they may be made in a suitable form to be secured or fastened to the building by separate screws. -Holes are made in the outer ends of the blind-supports, and then tapped out, for the purpose of forming a screw-thread, to receive the screw-ends l of thev screws e, as indicated in iig.l4 of the drawings.

The holes in the gears C are made large enough to permit them to turn freely,when the blind is opened and closed, without turning or moving the screws e.

The heads 2 of the screws prevent the blinds from rising up.

Shafts or spindles E are passed through holes in the sides of the building, and arefitted with bevel-gears F, to mesh into the segment-gears 0,upon' the blindsectionsA A. e

.Upon the inside ofthe building, the spindles E are provided with knobs, H, and also with locking or holding-plates g, the latter being made with notches, to receive the sliding or locking-boltsl h, Vwhich arefheld in place by the bands or guide-pieces m.

Plates g should be provided with one notch, to hold the blind when closed, and another when opened, as shown in iig. 1, and, in addition thereto, may have several more intermediate notches, tov hold the blindf at any desired intermediate position.

In lieu of knobs H, cranks, or other-means of operating or turniugthe spindles E from the inside of the building, may be employed.

The ends of thescrews a are placed-in the moulds, in such a manner that, when the ,segment-gears G are cast, 'the lmetal runs aroundV the ends of the screws a,

thereby uniting the screws a with the gears C in a secure and rigid manner, as .indicated in iig. 2 ofthe accompanying drawings, 'r l 'The gears F are made in segments, the same as the gears 0, so that, when the-blinds are' closed, the dat parts of the gears abut against the edges of the blindsections, while, when the blind-sections are opened, the gear part In turns in back of the edges of the blindsections, which are swung out 'om the side oi' the building.

By this arrangement, the blind-sections can be turned in close to the sides of the building when closed, and drawn up against'the dat parts of the gears F, thereby preventing all c latteringor jarring of the blinds.

The operation is as follows:

Sliding or locking-bolt h is raised, and spindle E turned, to close' or Vopen the blind, as the casef may be, after which bolt h is allowed to drop into a notch in the plate g, and the blind becomes fastened in the position it occupies until bolt his raised again.

My improved device Afor opening, closing, and fastening the blind is very simple, compact, and not liable to get out of order, while the gears C are made to answer as parts of the lower hinges of the blind--a very important feature, since it reduces the cost lvery much, while, at the same time, securing a very strong lower hinge.

1am aware that gears have heretofore been employed to form at once the blind-hinge, and the means by which, in connection with a suitable spindle, or other device'for operating them, the blindis openedand closed,

and I do-not claim broadly the employment of gears for such purpose; but

What I do claim, and desire to secure by Letters Patent, is-

The segmental gears arranged, and applied to the blinds and blind-support A in the manner specified and shown.

O and F,'when'constructed, 

